JP3833308B2 - Remote control engine starter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a remote control engine starter with an anti-theft function having a function of starting an engine by a remote operation and having an ID code as an anti-theft function.
[0002]
[Prior art]
FIG. 2 is a block diagram showing a conventional engine starter for an A / T vehicle by remote control. In the figure, 1 is a portable transmitter for a remote control engine starter having an engine start button and an engine stop button, and 2 is a portable device. This is a fixed receiver for a remote control engine starter that receives transmission data including an ID (identification, same confirmation) code transmitted from the transmitter 1. Reference numeral 3 denotes an antenna of the portable transmitter 1, and 4 denotes an antenna of the fixed receiver 2.
[0003]
Reference numeral 5 denotes a code decoding circuit that decodes the ID code in the received data received by the fixed receiver 2, and whether or not the ID code matches the ID code registered in advance in the ID code memory 8. This is a judgment.
[0004]
Therefore, the code decoding circuit 5 compares the extracted ID code with the code extraction circuit 6 that extracts the ID code from the received data and the ID code registered in the ID code memory 8 to determine whether they match. A code comparison circuit 7 for judging whether or not.
[0005]
Further, 9 is a key switch detection circuit for detecting whether or not a key is inserted into the engine start ignition switch, 10 is a door switch detection circuit for detecting door closing, and 11 is that the parking brake is applied. Parking brake detection circuit for detecting, 12 a parking range detecting circuit for detecting whether or not the gear is in the parking position, 13 a hood hood switch detecting circuit for detecting whether or not the hood is open, and 14 for an engine starter In the regulator L terminal detection circuit for detecting the H level state of the L terminal, each of these detection outputs is input to an engine start signal generation circuit 15 described later, and whether or not all of these various outputs are in an abnormal state. Determined.
[0006]
15 determines that an abnormal state is not detected based on the detection outputs from the detection circuits 9 to 14, and the code decoding circuit 5 determines that the ID codes match, and the portable transmitter 1 sends the engine When it is determined that a signal indicating a start command has been transmitted, an engine start signal that generates an engine start signal including a battery signal, an ignition signal, an ACC (accessory) signal, and a starter signal and outputs the engine start signal to the engine start control circuit 16 The engine starting signal generating circuit 15, the code decoding circuit 5, and the engine starting control circuit 16 are constituted by a microcomputer.
[0007]
Reference numeral 17 denotes an engine ignition circuit for receiving control output from the engine start control circuit 16 to control the ignition of the engine. Reference numeral 18 denotes an F code in which an F (function) code for instructing engine start and engine stop command contents is registered. It is memory.
[0008]
Next, the operation of the microcomputer comprising the engine start signal generating circuit 15, the code decoding circuit 5, and the engine start control circuit 16 will be described with reference to the flowchart of FIG.
That is, when the ignition switch is turned on and power is supplied in the vehicle, the engine start signal generation circuit 15, the code decoding circuit 5, and the engine start control circuit 16 start operation, and proceed from step 10 to step 20. It is determined whether or not the ID code and F code are supplied from the fixing receiver 2 to the code extraction circuit 6. If it is determined that the ID code and F code are not received, the process returns to step 20.
[0009]
If it is determined that it has been received, the process proceeds to step 30 where the ID code and F code are decoded and the process proceeds to step 40. In step 40, the ID code and F code stored in the ID code memory 8 and F code memory 18 are read and compared by the code comparison circuit 7 to determine whether or not the ID code is a regular ID code. If it is determined that it is not an ID code, the process returns to step 20.
[0010]
If it is determined in step 40 that the ID code is legitimate, the process proceeds to step 50. In step 50, detection outputs from the various detection circuits 9 to 14 are input, and it is determined in step 60 whether or not the detection outputs are at a predetermined level, that is, whether or not the engine start condition is satisfied. If it is satisfied and the predetermined level is determined, the code comparison circuit 7 instructs the engine start signal creating circuit 15 to create an engine start signal. In step 70, an engine start signal is created. , A battery signal, an ignition signal, an ACC (accessory) signal, and a starter signal are sequentially generated during a predetermined time and supplied to the engine ignition circuit 17. If it is determined in step 60 that the engine start condition is not satisfied and the detection output is not at a predetermined level, the process returns to step 20. When it is determined in step 30 that the F code is a signal for instructing engine stop, the engine start control circuit 16 stops the engine start output to the engine ignition circuit 17.
[0011]
Next, the operation will be described. In this engine starter, when an engine start signal having an ID code dedicated to the vehicle owner is transmitted from the portable transmitter 1 by operating the engine start button, this is received by the fixed receiver 2 through the antennas 3 and 4. The specific ID code and F code are extracted by the code extraction circuit 6 in the code decoding circuit 5.
The extracted ID code and F code are compared with the reference ID code and F code registered in the ID code memory 8 and the F code memory 18 by the code comparison circuit 7 respectively. An engine start command is input to the engine start signal generation circuit 15 on condition that each detection output of the switch detection circuit 9 to the regulator L terminal detection circuit 14 indicates a normal state and satisfies the engine start condition. The
[0012]
For this reason, the engine start signal generation circuit 15 outputs an ignition signal, an ACC (accessory) signal, and a starter signal together with a battery signal to the engine start control circuit 16, and the engine start control circuit 16 generates engine ignition based on these outputs. The engine ignition signal is output to the circuit 17 to drive the engine to ignite. A signal for instructing to stop the engine is transmitted from the portable transmitter 1 to the fixed receiver 2 together with the ID code, and the ID code is normal in the code comparison circuit 7 and is a normal signal for instructing to stop the engine. If it is determined, output of the engine start signal to the engine ignition circuit 17 is stopped.
[0013]
[Problems to be solved by the invention]
However, in such a conventional remote control engine starter for an A / T vehicle, for example, the parking range detection circuit 12 is a switch having a simple configuration such as a limit switch. By attaching the starter to the manual car and connecting the terminal connected to the parking range detection circuit 12 to the power line (or ground line), the remote control engine starter for A / T car can be easily attached to the manual car. There was a risk of creating a very dangerous situation.
[0014]
Accordingly, the present invention has been made paying attention to the above-described problems, and an object thereof is to obtain a remote control engine starter dedicated to A / T vehicles that cannot be easily attached to a manual vehicle.
[0015]
[Means for Solving the Problems]
The remote control engine starter according to the present invention provides an engine start signal only when at least a gear is set at a position where the engine can be started when the receiver receives a signal instructing the start of the engine from the transmitter. In a remote control engine starter comprising a microcomputer for producing a microcomputer, the receiver is attached to the vehicle, the engine is first started, and the gear is put into the parking position or neutral position or is disengaged. that up maintains the sleep state, the gear is either placed in the parking position or neutral position, or more or is detached, reversed thus sleep state of the output level of the detection circuit for detecting the gear position is released It is characterized by that.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 shows a flowchart of the present invention corresponding to the flowchart of the microcomputer constituting the engine start signal generating circuit 15, the code decoding circuit 5, and the engine start control circuit 16 shown in FIG. Since a portion A indicated by a broken line is added to the above, only that portion will be described below.
[0017]
(1) First, when the remote control engine starter is first attached to the vehicle, the remote control engine starter is in a state where it does not operate even when the power source is connected and an engine start signal is transmitted from the portable transmitter 1. The case where the connection terminal is attached at a predetermined position of the A / T vehicle, that is, as shown in FIG. 2, will be described below.
In step 100, it is determined whether or not the microcomputer constituting the engine start signal generating circuit 15, the code decoding circuit 5 and the engine start control circuit 16 has been powered on by being supplied with power. If it is determined that the power-on reset is not performed, the process returns to step 100. If it is determined that the power-on reset is performed, the process proceeds to step 110. In step 110, it is determined whether or not the sleep state of the microcomputer is released. If it is determined that the microcomputer is released, the process proceeds to step 20, and the operation described with reference to FIG.
[0018]
On the other hand, if it is determined in step 110 that the microcomputer has not been released from sleep, the microcomputer is set in the sleep state and the process proceeds to step 120. In step 120, it is determined whether or not the engine is started, that is, whether or not the engine start signal is generated in the engine start signal generating circuit 15. If it is determined that the engine start signal is not generated, the process returns to step 100. If it is determined that the engine start signal has been generated, the process proceeds to step 130 where the detection signal is input from the parking brake detection circuit 11 (or the neutral detection switch), the gear is put into the parking position, and the output level is set. If it is determined that the state is reversed, the sleep state of the microcomputer is reset in step 140, and the process proceeds to a normal operation, that is, step 20. If the detected output level is not inverted, the process returns to step 100.
Thereafter, the operation is performed according to the same flowchart as that described in FIG.
[0019]
(2) The operation after the remote control engine starter is attached to the vehicle will be described.
In step 110, it is determined that the sleep state of the microcomputer has been canceled.
[0020]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a remote control engine starter that is difficult to be attached to a manual vehicle, and it is possible to prevent an erroneous assembly.
[Brief description of the drawings]
FIG. 1 is a flowchart of a microcomputer of a remote control engine starter showing an embodiment of the present invention.
FIG. 2 is a circuit block diagram for explaining an overall system of a remote control engine starter.
FIG. 3 is a flowchart of the microcomputer of FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Portable transmitter 6 Code extraction circuit 7 Code comparison circuit 8 ID code memory 9 Key switch detection circuit 10 Door switch detection circuit 11 Parking brake detection circuit 12 Parking range detection circuit 13 Bonnet food switch detection circuit 14 Regulator L terminal detection circuit 15 Engine start signal generation circuit 16 Engine start control circuit

Claims (1)

A microcomputer for generating an engine start signal only when the receiver receives a signal instructing to start the engine from the transmitter, at least when the gear is set to a position allowing the engine to start In a remote control engine starter, the microcomputer maintains a sleep state until the receiver is attached to the vehicle, the engine is first started, and the gear is put into a parking position, or a neutral position, or removed. remote control engine starter gear is equal to or more on whether placed in the parking position or neutral position, or is detached, is inverted to thus sleep state of the output level of the detection circuit for detecting the gear position is released .

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